Front Side Member Bead Structure for Small Overlap Crash Loads
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Solution Overview
Problem
The front side member in vehicle structures lacks effective shock-absorbing capabilities, particularly in small overlap collisions, where it fails to absorb impact energy efficiently.
Innovation Solution
A front side member design featuring an outer and inner bead with varying bead depths along the vehicle's longitudinal direction, forming inclined surfaces that enhance the structural rigidity and energy absorption during collisions, allowing for improved crash load support and deformation behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the front side member is disposed parallel to the longitudinal axis of the vehicle body, then the structural simplicity is maintained, but the shock absorbing ability is insufficient in small overlap collisions
Solution Approach 1:
The patent applies local quality by creating beads with varying depths at specific locations along the front side member. The first bead on the outer side wall and the second bead on the inner side wall have different depth characteristics in different longitudinal regions, allowing localized energy absorption without changing the overall simple parallel structure of the side member.
Solution Approach 2:
The patent introduces a new dimension of complexity by varying the bead depth in the longitudinal direction. Instead of changing the basic orientation or configuration of the side member, the invention adds depth variation to the bead structures, creating a three-dimensional energy absorption profile that enhances shock absorbing ability while maintaining the simple parallel disposition.
2Strength
If the bead depth is increased to improve energy absorption, then the shock absorbing ability is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The patent applies local quality by creating beads with varying depths at specific locations along the front side member. The first bead on the outer side wall and the second bead on the inner side wall have different depth characteristics in different longitudinal regions, allowing localized energy absorption without changing the overall simple parallel structure of the side member.
Solution Approach 2:
The patent introduces a new dimension of complexity by varying the bead depth in the longitudinal direction. Instead of changing the basic orientation or configuration of the side member, the invention adds depth variation to the bead structures, creating a three-dimensional energy absorption profile that enhances shock absorbing ability while maintaining the simple parallel disposition.
Data Source
AI summary
The present invention relates to a front side member for a vehicle, which can effectively support a collision load on the front side and can improve the rigidity of a vehicle body, the front side member for a vehicle, comprising: an outer wall; an inner wall positioned to face the outer wall; an outer bead which is formed, along the lengthwise direction of a vehicle body, from the outer wall and has a first groove surface; and an inner bead which is formed, along the lengthwise direction of the vehicle body, from the inner wall and has a second groove surface, wherein the outer bead comprises an area in which a bead depth that is the distance between the outer wall and the first groove surface changes along the lengthwise direction of the vehicle body, and the inner bead comprises an area in which a bead depth that is the distance between the inner wall and the second groove surface changes along the lengthwise direction of the vehicle body.